User blog comment:Semerone/Voice actors/@comment-31591088-20180404213500/@comment-33576184-20180406160507

I am not Semerone, but I can answer your question about Sayaka. ^^

In the Japanese version, her name is always Sayaka and never changes. Her full name is "Sayaka Nagumo", but to my knowledge it is only mentioned in Episode 35 when she enters an archery contest with "Ichiko Nasu".